Perceptual content, not physiological signals, determines perceived duration when viewing dynamic, natural scenes

Suarez-Pinilla, Marta, Nikiforou, Kyriacos, Fountas, Zafeirios, Seth, Anil K and Roseboom, Warrick (2019) Perceptual content, not physiological signals, determines perceived duration when viewing dynamic, natural scenes. Collabra Psychology, 5 (1). pp. 1-16. ISSN 2474-7394

[img] PDF - Accepted Version
Restricted to SRO admin only

Download (1MB)
[img] PDF - Published Version
Available under License Creative Commons Attribution.

Download (3MB)

Abstract

The neural basis of time perception remains unknown. A prominent account is the pacemaker-accumulator model, wherein regular ticks of some physiological or neural pacemaker are read out as time. Putative candidates for the pacemaker have been suggested in physiological processes (heartbeat), or dopaminergic mid-brain neurons, whose activity has been associated with spontaneous blinking. However, such proposals have difficulty accounting for observations that time perception varies systematically with perceptual content. We examined physiological influences on human duration estimates for naturalistic videos between 1-64 seconds using cardiac and eye recordings. Duration estimates were biased by the amount of change in scene content. Contrary to previous claims, heart rate, and blinking were not related to duration estimates. Our results support a recent proposal that tracking change in perceptual classification networks provides a basis for human time perception, and suggest that previous assertions of the importance of physiological factors should be tempered.

Item Type: Article
Schools and Departments: School of Engineering and Informatics > Informatics
Research Centres and Groups: Sackler Centre for Consciousness Science
Subjects: B Philosophy. Psychology. Religion > BF Psychology
B Philosophy. Psychology. Religion > BF Psychology > BF0311 Consciousness. Cognition
Depositing User: Marianne Cole
Date Deposited: 21 Nov 2019 08:52
Last Modified: 21 Nov 2019 09:00
URI: http://sro.sussex.ac.uk/id/eprint/88179

View download statistics for this item

📧 Request an update